Volkswagen Polo Service & Repair Manual: Odor from the Heater and A/C Unit

Possible Concerns

  Note The A/C system is functioning correctly when the air flowing from the instrument panel vents has a temperature of 70C or lower. ...

Odor from Evaporator or Heat Exchanger?

  Fishy smell –  From leak at cooling system of engine or of A/C system heater core.   Note ...

Other materials:

6-Pin Universal Oxygen Sensor, Removing and Installing
  Note Use the faulty sensor as a guide for installing all of the accompanying attachments, cable ties or marking bands. Do not crimp or cut the wires otherwise the functionality of the heated oxygen sensor (HO2S) will ...

Adhesive Surface Pretreatment when Replacing Laser-Soldered Roofs
 Dry sand the cataphoretic primer on the roof adhesive surface -item 6- → Item down to the bare metal using P180 sandpaper.   –  Dry sand the roof pillar adhesive surface ...

Tires, Aging
Even tires that look in good shape, new or hardly use and have sufficient tread depth and that are older than 6 years, can age caused by moisture and winter conditions. Tire test show that through continual development, new rubber ...